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Systematic in vitro comparison of decellularization protocols for blood vessels.

Journal article
Authors Robin Simsa
Arvind M. Padma
Heher P
Mats Hellström
Teuschl A
Lachmi Jenndal
Niklas Bergh
Per Fogelstrand
Published in PloS one
Volume 13
Issue 12
Pages e0209269
ISSN 1932-6203
Publication year 2018
Published at Wallenberg Laboratory
Institute of Medicine, Department of Molecular and Clinical Medicine
Institute of Clinical Sciences, Department of Obstetrics and Gynecology
Pages e0209269
Language en
Links dx.doi.org/10.1371/journal.pone.020...
www.ncbi.nlm.nih.gov/entrez/query.f...
Subject categories Cardiovascular medicine

Abstract

Decellularization of native blood vessels is a promising technology to generate 3D biological scaffolds for vascular grafting. Blood vessel decellularization has been performed in previous studies under various experimental conditions, that complicates comparison and optimization of suitable protocols. The goal of this work was to systematically compare the decellularization and recellularization efficacy of 5 different protocols utilizing the detergents sodium dodecyl sulfate (SDS), sodium deoxycholate (SDC), CHAPS and TritonX-100 together with DNA-removing enzymes on porcine vena cava in a perfusion bioreactor setup. Additionally, we tested the effect of DNase on the extracellular matrix (ECM) properties. We found that all protocols could efficiently decellularize blood vessels. Mechanical strength, collagen preservation and ECM integrity were similar among all tested detergents, yet TritonX protocols required long-term DNase application for complete decellularization. However, TritonX-based protocols showed the greatest recellularization efficacy with HUVECs in vitro. Furthermore, we developed a novel protocol for TritonX which improved recellularization and reduced total process time and ECM stiffness compared to previous protocols. SDS, SDC and CHAPS based protocols had a lower recellularization potential. In conclusion, decellularization of blood vessels can be achieved with all tested reagents, but TritonX treated ECM can be most efficiently recellularized with endothelial cells.

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